US9197778B2 - Method for reducing communication delay in printing apparatus having a wireless LAN capability - Google Patents

Method for reducing communication delay in printing apparatus having a wireless LAN capability Download PDF

Info

Publication number
US9197778B2
US9197778B2 US14/091,043 US201314091043A US9197778B2 US 9197778 B2 US9197778 B2 US 9197778B2 US 201314091043 A US201314091043 A US 201314091043A US 9197778 B2 US9197778 B2 US 9197778B2
Authority
US
United States
Prior art keywords
setting
power saving
saving mode
wireless communication
communication unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US14/091,043
Other languages
English (en)
Other versions
US20140146335A1 (en
Inventor
Hikaru Sugita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Assigned to CANON KABUSHIKI KAISHA reassignment CANON KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUGITA, HIKARU
Publication of US20140146335A1 publication Critical patent/US20140146335A1/en
Application granted granted Critical
Publication of US9197778B2 publication Critical patent/US9197778B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00885—Power supply means, e.g. arrangements for the control of power supply to the apparatus or components thereof
    • H04N1/00888—Control thereof
    • H04N1/00896—Control thereof using a low-power mode, e.g. standby
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00885—Power supply means, e.g. arrangements for the control of power supply to the apparatus or components thereof
    • H04N1/00888—Control thereof
    • H04N1/00891—Switching on or off, e.g. for saving power when not in use
    • Y02B60/50—

Definitions

  • the present invention relates to a printing apparatus capable of executing wireless communication, a control method for the printing apparatus, and a storage medium.
  • FIG. 1 illustrates processing executed when the power saving mode is disabled.
  • a printing apparatus is described as a device having a wireless LAN capability.
  • a wireless communication unit of the printing apparatus is always in an awake state, that is, the power is supplied to the wireless communication unit.
  • the wireless communication unit is in the awake state, the printing apparatus can transmit data to an external device or receive data transmitted from the external device via wireless communication.
  • an access point receives data 1 addressed to the printing apparatus from the external device such as a personal computer (PC).
  • the access point transmits the data 1 to the printing apparatus.
  • the access point transmits a signal called a beacon at a certain interval to a peripheral device, the transmission of the data 1 at timing 102 illustrated in FIG. 1 is executed regardless of the beacon interval.
  • FIG. 2 illustrates processing executed when the power saving mode is enabled.
  • the wireless communication unit repeatedly transitions between the awake state and a doze state when the power saving mode is enabled. In the doze state, the power supply to the wireless communication unit is stopped or reduced. Accordingly, when the wireless communication unit is in the doze state, the printing apparatus cannot transmit data to the external device or receive data transmitted from the external device via wireless communication.
  • the wireless communication unit intermittently transitions from the doze state to the awake state at timing 201 through timing 203 in synchronization with the beacon interval of the access point.
  • the access point receives data 1 (data addressed to the printing apparatus) transmitted from the PC.
  • the access point notifies the printing apparatus of the presence of the data addressed to the printing apparatus by using information called a traffic indication message (TIM) or a delivery traffic indication message (DTIM).
  • TIM is information used to notify the printing apparatus of the presence of the data addressed to the printing apparatus.
  • the DTIM is a type of the TIM, and indicates that the data to be transmitted is multicast or broadcast data.
  • the printing apparatus transitions to the awake state, and receives the TIM notified at timing 205 .
  • the printing apparatus requests the access point to transmit the data.
  • the access point transmits the data 1 to the printing apparatus in response to the request.
  • the wireless communication unit transitions from the awake state to the doze state on condition that data is not transmitted or received between the printing apparatus and the access point for a predetermined time period (e.g., half the time of the beacon interval) in the awake state.
  • a predetermined time period 209 has elapsed since reception of the data 1 is completed
  • the wireless communication unit transitions from the awake state to the doze state.
  • the wireless communication unit intermittently transitions from the doze state to the awake state in synchronization with the beacon interval of the access point as similar to the transition at timing 201 through timing 203 .
  • the condition causing the wireless communication unit to transition from the awake state to the doze state is not limited to the lapse of the predetermined time period 209 .
  • the wireless communication unit may transition from the awake state to the doze state on condition that the data addressed to the printing apparatus is not accumulated on the access point. In such a case, the absence of the accumulated data on the access point is confirmed by using the beacon.
  • the wireless communication unit of the printing apparatus repeatedly transitions between the awake state and the doze state. That is, the wireless communication unit does not always remain in the awake state. Accordingly, in a case where the power saving mode is enabled, power consumption of the wireless communication unit of the printing apparatus can be reduced compared to a case where the power saving mode is disabled.
  • the power consumption of the wireless communication unit can be reduced, a communication delay tends to occur in a case where the power saving mode for wireless LAN enabled.
  • the communication delay occurs at the time when the printing apparatus receives the data transmitted from the access point. A reason for the communication delay is described with reference to FIG. 3 .
  • the PC transmits data having a large volume (large-size data) to the printing apparatus through the access point.
  • the large volume data is divided into smaller volume data, and each of the divided data is transmitted to the printing apparatus.
  • FIG. 3 illustrates an example case where the large volume data is divided into data 1 , data 2 , and data 3 , and each of the divided data 1 , 2 , and 3 is transmitted to the printing apparatus.
  • the access point receives data 1 transmitted from the PC. If the power saving mode were disabled, the access point could immediately transmit the data 1 to the printing apparatus. However, since the power saving mode is enabled, the access point needs to wait until timing of a next beacon and transmits the data 1 . That is, the communication delay of a time period 302 occurs compared to a case where the power saving mode is disabled.
  • the wireless communication unit of the printing apparatus transitions from the awake state to the doze state at timing 303 if any data is not transmitted or received for a predetermined time period.
  • the access point receives data 2 from the PC at timing after the timing 303 as illustrated in FIG. 3 , the access point waits until timing of a next beacon and transmits the data 2 to the printing apparatus. That is, even when the data 2 is transmitted to the printing apparatus, the communication delay of a time period 304 occurs. Similarly, when data 3 is transmitted to the printing apparatus, the communication delay of a time period 305 occurs.
  • the large volume data is divided into three pieces of data and transmitted.
  • data such as a print job having a larger volume may be transmitted.
  • the data is divided into a larger number of pieces.
  • the present invention is directed to prevention of a communication delay which tends to occur if a power saving mode is enabled.
  • a printing apparatus includes a wireless communication unit configured to receive a print job including a plurality of divided data, a switching unit configured to switch a state of the wireless communication unit, in a case where the wireless communication unit receives the print job, from a state in which the wireless communication unit repeatedly transitions between an awake state and a doze state to a state in which the wireless communication unit remains in the awake state, and a printing unit configured to execute print processing based on the print job received by the wireless communication unit, wherein the wireless communication unit remains in the awake state until reception of the print job including the plurality of divided data is completed.
  • FIG. 1 is a diagram illustrating processing executed when a power saving mode is disabled according to a conventional technique.
  • FIG. 2 is a diagram illustrating processing executed when the power saving mode is enabled according to the conventional technique.
  • FIG. 3 is a diagram illustrating the occurrence of a communication delay.
  • FIG. 4 is a diagram illustrating a printing system according to a first exemplary embodiment.
  • FIG. 5 is a diagram illustrating a hardware configuration of the printing apparatus.
  • FIG. 6 is a diagram illustrating a setting screen used when a power saving mode is to be set.
  • FIG. 7 is a flowchart illustrating processing executed when a wireless communication unit receives data in the first exemplary embodiment.
  • FIG. 8 is a diagram illustrating processing performed when the power saving mode is switched between being enabled and disabled in the first exemplary embodiment.
  • FIG. 9 is a diagram illustrating a printing system according to a second exemplary embodiment.
  • FIG. 10 is a flowchart illustrating processing executed when the wireless communication unit receives data in the second exemplary embodiment.
  • FIG. 4 is a diagram illustrating a configuration of a printing system 400 according to a first exemplary embodiment.
  • the printing system 400 includes a printing apparatus 401 , a PC 402 , and an access point 403 .
  • the printing apparatus 401 and the PC 402 are wirelessly communicable with each other through the access point 403 .
  • FIG. 5 is a diagram illustrating a hardware configuration of the printing apparatus 401 .
  • the printing apparatus 401 is a multifunction peripheral having a copy function, a print function, a scanning function, and a transmission function.
  • the multifunction peripheral is described as an example.
  • the printing apparatus 401 is not limited to the multifunction peripheral.
  • the printing apparatus 401 does not necessarily have all the above functions.
  • the printing apparatus 401 may be a printer having the print function only. Alternatively, the printing apparatus 401 may have other functions.
  • the printing apparatus 401 includes a control unit 500 , an operation unit 520 , a printer 530 , a scanner 540 , a wired communication unit 550 , and a wireless communication unit 560 .
  • the control unit 500 includes a central processing unit (CPU) 501 .
  • the CPU 501 reads a control program stored in a read only memory (ROM) 502 , and controls the entire operations of the printing apparatus 401 .
  • a random access memory (RAM) 503 is used as a main memory and a temporary storage area such as a work area of the CPU 501 .
  • a non-volatile random access memory (NVRAM) 504 is a non-volatile memory, and stores various information.
  • a hard disk drive (HDD) 505 is used as a storage area for storing font data, emulation programs, and form data.
  • the printing apparatus 401 causes one CPU 501 to execute each step of the flowchart described below by using one memory (the RAM 503 or the HDD 505 ).
  • the printing apparatus 401 may have a different configuration.
  • a plurality of CPUs and a plurality of RAMs or HDDs may cooperate with each other to execute each step of the flowchart described below.
  • An operation unit interface (I/F) 506 connects the operation unit 520 and the control unit 500 .
  • the control unit 500 and the operation unit 520 transfer data therebetween through the operation unit I/F 506 .
  • the operation unit 520 includes a keyboard or a liquid crystal display unit having a touch panel function. A user can input an instruction to the printing apparatus 401 through the operation unit 520 .
  • a printer I/F 507 connects the printer 530 and the control unit 500 .
  • the control unit 500 and the printer 530 transfer data therebetween through the printer I/F 507 .
  • the printer 530 executes print processing based on a print job received from the PC 402 or image data generated by the scanner 540 .
  • a scanner I/F 508 connects the scanner 540 and the control unit 500 .
  • the control unit 500 and the scanner 540 transfer data therebetween through the scanner I/F 508 .
  • the scanner 540 generates image data by reading a document.
  • a wired communication I/F 509 connects the wired communication unit 550 and the control unit 500 .
  • the control unit 500 and the wired communication unit 550 transfer data therebetween through the wired communication I/F 509 .
  • the wired communication unit 550 is connected to a LAN cable (not illustrated), so that the wired communication unit 550 can communicate with an external device on a network.
  • a wireless communication unit I/F 510 connects the wireless communication unit 560 and the control unit 500 .
  • the control unit 500 and the wireless communication unit 560 transfer data therebetween through the wireless communication unit I/F 510 .
  • the wireless communication unit 560 can wirelessly communicate with an external device on a network through the access point 403 .
  • a power control unit 511 controls the power supply from a power source (not illustrated) to each of the control unit 500 , the operation unit 520 , the printer 530 , the scanner 540 , the wired communication unit 550 , and the wireless communication unit 560 of the printing apparatus 401 .
  • the wireless communication unit 560 of the printing apparatus 401 has a power saving mode. If the power saving mode is disabled, the wireless communication unit 560 is always in an awake state, that is, the power is supplied to the wireless communication unit 560 by the power control unit 511 . When the wireless communication unit 560 is in the awake state, the printing apparatus 401 can transmit data to the external device or receive data transmitted from the external device by using wireless communication.
  • the wireless communication unit 560 repeatedly transitions between the awake state and a doze state. In the doze state, the power supply to the wireless communication unit 560 is stopped or reduced by the power control unit 511 . When the wireless communication unit 560 is in the doze state, the printing apparatus 401 cannot transmit data to the external device or receive data transmitted from the external device by using wireless communication.
  • the wireless communication unit 560 of the printing apparatus 401 transitions from the doze state to the awake state in synchronization with a beacon interval of the access point 403 . Accordingly, in a case where the power saving mode is enabled, power consumption of the wireless communication unit 560 of the printing apparatus 401 can be reduced compared to a case where the power saving mode is disabled.
  • FIG. 6 is a setting screen 600 displayed on the operation unit 520 .
  • the power saving mode becomes enabled.
  • the user selects an OFF button 602 on the setting screen 600 the power saving mode becomes disabled.
  • FIG. 7 is a flowchart illustrating processing executed when the wireless communication unit 560 of the printing apparatus 401 receives data transmitted from the external device.
  • Each step in the flowchart illustrated in FIG. 7 is executed by the CPU 501 .
  • the CPU 501 loads a program stored in a memory such as the ROM 502 to the RAM 503 , and executes the loaded program for each step.
  • the user uses the setting screen 600 illustrated in FIG. 6 to set beforehand whether the power saving mode should be enabled or disabled. This setting is stored in the NVRAM 504 of the printing apparatus 401 .
  • the data transmitted from the PC 402 is received by the wireless communication unit 560 of the printing apparatus 401 through the access point 403 .
  • the CPU 501 determines whether the received data is a print job.
  • the CPU 501 makes a determination based on analysis of a port number used for the communication and a header of the received data.
  • the case in which the received data is not a print job includes, for example, a case where the PC 402 gives an instruction to store image data into the HDD 505 , and the wireless communication unit 560 receives the image data to be stored.
  • step S 701 the operation proceeds to step S 702 .
  • step S 702 the CPU 501 determines whether “the power saving mode is enabled” is set by the user. If the user has selected the ON button 601 on the setting screen 600 , and the resultant selection has been stored in the NVRAM 504 , the CPU 501 determines that “the power saving mode is enabled” is set by the user (YES in step S 702 ). Subsequently, the operation proceeds to step S 703 .
  • the CPU 501 determines that “the power saving mode is enabled” is not set by the user (NO in step S 702 ). Then, the processing of the flowchart ends.
  • step S 703 the CPU 501 causes the power saving mode to be disabled.
  • the wireless communication unit 560 notifies the access point 403 of the fact that the power saving mode becomes disabled. The processing executed in step S 703 is described in detail with reference to FIG. 8 .
  • FIG. 8 is a diagram illustrating processing executed when the power saving mode of the wireless communication unit 560 is enabled, that is, the ON button 601 on the setting screen 600 has been selected by the user.
  • the PC 402 transmits data 1 , data 2 , and data 3 to the printing apparatus 401 .
  • the data 1 , 2 , and 3 are provided by dividing the print job into three pieces of data.
  • the power saving mode is enabled at the beginning of the processing illustrated in FIG. 8 .
  • the access point 403 transmits the data 1 to the printing apparatus 401 , and the CPU 501 of the printing apparatus 401 determines that the received data is the print job.
  • the CPU 501 causes the power saving mode to be disabled (step S 703 illustrated in FIG. 7 ). In the present exemplary embodiment, the power saving mode remains disabled until all the divided data 1 , 2 , and 3 is received.
  • the access point 403 receives the data 2 subsequent to the data 1 from the PC 402 .
  • the access point 403 receives the data 3 from the PC 402 .
  • the power saving mode remains disabled at both timing 803 and timing 804 .
  • the access point 403 can immediately start transmitting the data 2 and 3 to the printing apparatus without waiting for a next beacon. That is, if the power saving mode having been set as enabled becomes disabled, a communication delay such as time periods 304 and 305 illustrated in FIG. 3 can be prevented.
  • step S 704 the CPU 501 determines whether data reception is completed. In the present exemplary embodiment, if all the divided data is received (e.g., the data 1 , 2 , and 3 illustrated in FIG. 8 ) (YES in step S 704 ), the CPU 501 determines that the data reception is completed. Then, the operation proceeds to step S 705 . On the other hand, if the data reception is not completed (NO in step S 704 ), the CPU 501 waits until all the data is received.
  • step S 705 the CPU 501 causes the power saving mode to be enabled.
  • the wireless communication unit 560 notifies the access point 403 of the fact that the power saving mode becomes enabled. Such processing is executed at timing 807 illustrated in FIG. 8 .
  • the CPU 501 causes the power saving mode to be temporarily disabled in a case where the printing apparatus 401 receives the print job.
  • the CPU 501 causes the power saving mode to remain disabled until reception of the print job is completed. This can prevent a communication delay which tends to occur in a case where the power saving mode is enabled.
  • the CPU 501 causes the power saving mode to return to the enabled state. This reduces power consumption of the wireless communication unit 560 .
  • the CPU causes the power saving mode to be temporarily disabled in a case where the printing apparatus receives the print job.
  • the power saving mode remains enabled in the first exemplary embodiment.
  • a power saving mode is temporarily disabled on condition that the received data is a specific type of data.
  • FIG. 9 is a diagram illustrating a printing system 900 according to the present exemplary embodiment.
  • the printing system 900 includes the printing apparatus 401 , the PC 402 , the access point 403 , and a server 901 .
  • the server 901 can communicate with the printing apparatus 401 through the access point 403 .
  • the server 901 accumulates moving image data (e.g., moving image data indicating a maintenance procedure of the printing apparatus 401 ) to be viewed in the printing apparatus 401 by a user.
  • the server 901 transmits the moving image data to the printing apparatus 401 according to a request from the printing apparatus 401 .
  • FIG. 10 is a flowchart illustrating processing executed when the wireless communication unit 560 of the printing apparatus 401 receives data transmitted from an external device.
  • Each step in the flowchart illustrated in FIG. 10 is executed by the CPU 501 .
  • the CPU 501 loads a program stored in a memory such as the ROM 502 to the RAM 503 , and executes the loaded program for each step. Since steps S 701 through S 705 of the flowchart illustrated in FIG. 10 are substantially the same as those illustrated in FIG. 7 , descriptions thereof are omitted.
  • step S 1001 the CPU 501 determines whether the received data is a specific type of data. In the present exemplary embodiment, if the wireless communication unit 560 of the printing apparatus 401 receives the moving image data, the CPU 501 determines that the specific type of data is received. Herein, the CPU 501 makes a determination based on analysis of a port number used for communication and a header of the received data.
  • step S 702 the CPU 501 determines whether the power saving mode is enabled. If the power saving mode is enabled (YES in step S 702 ), then in step S 703 , the CPU 501 causes the power saving mode to be disabled as similar to the case of the print job reception.
  • the CPU 501 causes the power saving mode to be temporarily disabled in a case where the wireless communication unit 560 of the printing apparatus 401 receives the moving image. This can prevent the communication delay which tends to occur in a case where the power saving mode is enabled.
  • step S 1001 illustrated in FIG. 10 the CPU 501 determines that the received data is the specific type of data on condition that the wireless communication unit 560 receives the moving image data.
  • other conditions may be applied.
  • the CPU 501 may determine that the data received in step S 1001 is a specific type of data.
  • Embodiments of the present invention can also be realized by a computer of a system or apparatus that reads out and executes computer executable instructions recorded on a storage medium (e.g., non-transitory computer-readable storage medium) to perform the functions of one or more of the above-described embodiment(s) of the present invention, and by a method performed by the computer of the system or apparatus by, for example, reading out and executing the computer executable instructions from the storage medium to perform the functions of one or more of the above-described embodiment(s).
  • the computer may comprise one or more of a central processing unit (CPU), micro processing unit (MPU), or other circuitry, and may include a network of separate computers or separate computer processors.
  • the computer executable instructions may be provided to the computer, for example, from a network or the storage medium.
  • the storage medium may include, for example, one or more of a hard disk, a random-access memory (RAM), a read only memory (ROM), a storage of distributed computing systems, an optical disk (such as a compact disc (CD), digital versatile disc (DVD), or Blu-ray Disc (BD)TM), a flash memory device, a memory card, and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Facsimiles In General (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
US14/091,043 2012-11-29 2013-11-26 Method for reducing communication delay in printing apparatus having a wireless LAN capability Expired - Fee Related US9197778B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012260533A JP6128813B2 (ja) 2012-11-29 2012-11-29 印刷装置、印刷装置の制御方法、及びプログラム
JP2012-260533 2012-11-29

Publications (2)

Publication Number Publication Date
US20140146335A1 US20140146335A1 (en) 2014-05-29
US9197778B2 true US9197778B2 (en) 2015-11-24

Family

ID=50773028

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/091,043 Expired - Fee Related US9197778B2 (en) 2012-11-29 2013-11-26 Method for reducing communication delay in printing apparatus having a wireless LAN capability

Country Status (2)

Country Link
US (1) US9197778B2 (enExample)
JP (1) JP6128813B2 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240430742A1 (en) * 2023-06-20 2024-12-26 Seiko Epson Corporation Electronic apparatus and control method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6066694B2 (ja) * 2012-11-29 2017-01-25 キヤノン株式会社 情報処理装置、情報処理装置の制御方法及びプログラム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002300175A (ja) 2001-04-03 2002-10-11 Matsushita Electric Ind Co Ltd 無線通信システム
US20110116398A1 (en) * 2009-11-13 2011-05-19 Canon Kabushiki Kaisha Communication apparatus, control method of communication apparatus, and program

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004164566A (ja) * 2002-09-27 2004-06-10 Casio Comput Co Ltd 通信端末の電力制御装置及び通信端末の電力制御方法
JP4438063B2 (ja) * 2004-11-05 2010-03-24 キヤノン株式会社 通信システム、通信装置、通信方法、及びプログラム
JP2007081579A (ja) * 2005-09-12 2007-03-29 Canon Inc 通信装置及びその制御方法
JP2008219358A (ja) * 2007-03-02 2008-09-18 Sony Corp 無線通信システム、無線通信装置及び無線通信方法、並びにコンピュータ・プログラム
JP2009188836A (ja) * 2008-02-07 2009-08-20 Sony Ericsson Mobilecommunications Japan Inc 携帯通信端末とその制御方法及び制御プログラム
JP2010124331A (ja) * 2008-11-20 2010-06-03 Toshiba Corp 映像処理装置、および映像処理装置の映像処理方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002300175A (ja) 2001-04-03 2002-10-11 Matsushita Electric Ind Co Ltd 無線通信システム
US20110116398A1 (en) * 2009-11-13 2011-05-19 Canon Kabushiki Kaisha Communication apparatus, control method of communication apparatus, and program

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240430742A1 (en) * 2023-06-20 2024-12-26 Seiko Epson Corporation Electronic apparatus and control method

Also Published As

Publication number Publication date
JP2014104684A (ja) 2014-06-09
US20140146335A1 (en) 2014-05-29
JP6128813B2 (ja) 2017-05-17

Similar Documents

Publication Publication Date Title
CN109218552B (zh) 通信装置及其控制方法
US10642549B2 (en) Communication apparatus having direct wireless communication function and method for controlling communication apparatus
US9787860B2 (en) Image forming apparatus with option for disabling near-field communication and direct wireless communication
US9001352B2 (en) Image forming apparatus that performs user authentication by wireless communication, method of controlling the same, and storage medium
US10149245B2 (en) Information processing apparatus, method of controlling the same and storage medium
US20150199154A1 (en) Information processing apparatus that suppresses power consumption and method for controlling the same, and storage medium
US9813576B2 (en) Communication apparatus, control method, and program
US9479663B2 (en) Information processing apparatus, method for controlling information processing apparatus, and storage medium
JP2016119575A (ja) 画像形成システム、画像形成装置、端末、プログラム
US9122973B2 (en) Data transmission apparatus, method for controlling data transmission apparatus, and storage medium
US9423744B2 (en) Image forming apparatus and method of controlling entry to power save mode thereof
US20180317181A1 (en) Information processing apparatus and information processing method
US9197778B2 (en) Method for reducing communication delay in printing apparatus having a wireless LAN capability
US20190306337A1 (en) Communication apparatus, control method, and storage medium
US9152359B2 (en) Image forming apparatus that selects appropriate power saving mode for each time slot
US10165144B2 (en) Image forming apparatus, control method therefor, and storage medium
US20190018443A1 (en) Image transmission apparatus, image transmission system, and method of controlling image transmission apparatus
US10033895B2 (en) Printing apparatus having plurality of power states and control method therefor
US10638528B2 (en) Communication apparatus, method of controlling communication apparatus, and storage medium, for establishing communication link
US10382639B2 (en) Information processing system acquire transition notification from host device to transit to energy saving mode

Legal Events

Date Code Title Description
AS Assignment

Owner name: CANON KABUSHIKI KAISHA, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SUGITA, HIKARU;REEL/FRAME:032742/0523

Effective date: 20131107

STCF Information on status: patent grant

Free format text: PATENTED CASE

FEPP Fee payment procedure

Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

LAPS Lapse for failure to pay maintenance fees

Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20191124